A groundbreaking study from NYU Langone Health debunks this persistent myth. After analyzing over 1.1 million pregnancies, researchers found no convincing evidence linking common maternal health issues like infections or depression during pregnancy to a child's autism diagnosis. The research confirms that autism is not caused by maternal behavior or illness.
The study, published in Nature Medicine, adds to a growing body of science showing that autism is largely influenced by genetic factors and prenatal development. Researchers emphasized that over 350 genes are already known to play a role in autism and developmental delays, many occurring spontaneously at conception rather than being inherited.
This study aims to alleviate the significant emotional weight many mothers have carried, assuring them they should not feel guilty. The data clearly shows that while some maternal conditions might appear linked at first glance, those associations disappear when accounting for genetics, parental age, and shared family factors. It reinforces that autism is not something parents "do wrong" during pregnancy.